CN113534931A - Multifunctional control system based on VME bus architecture - Google Patents
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- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 230000003993 interaction Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
- G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/76—Architectures of general purpose stored program computers
- G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
- G06F15/7803—System on board, i.e. computer system on one or more PCB, e.g. motherboards, daughterboards or blades
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0026—PCI express
Abstract
The invention discloses a multifunctional control system based on a VME bus architecture, which comprises an upper computer and a controller, wherein a main control CPU board, a VME bus back board and a power supply are arranged in the controller, a plurality of unit board cards are arranged on the controller, the main control CPU board and the plurality of unit board cards are both arranged on a clamping groove on the VME bus back board, the plurality of unit board cards are respectively a multi-serial port unit, an I/O unit, an AD/DA unit, an analog unit and a pulse unit, and a VME bus is arranged on the VME bus back board; and the upper computer is communicated with the main control CPU board through a TPC/IP network. By applying the VME bus, the invention can realize that the upper computer can carry out instruction transmission and data monitoring on each unit board card in real time, the communication between each unit board card and the upper computer is not interfered mutually, the real-time synchronization performance is good, and the data among a plurality of unit board cards of different types can be interacted.
Description
Technical Field
The invention relates to the field of control systems, in particular to a multifunctional control system based on a VME bus architecture.
Background
The VME bus is a general computer bus that combines the electrical standards of the Motorola Versa bus with the mechanical form factor of the Eurocard standard established in europe, and is an open architecture. It defines a system for interconnecting data processing, data storage and connection to peripheral control devices in a tightly coupled hardware architecture. After years of transformation and upgrading, the VME system has been developed to be very perfect, and products developed around the VME system are spread to the fields of industrial control, military systems, aerospace, transportation, medical treatment and the like.
At present, the traditional PLC is widely used in the field of industrial control due to its high speed, high performance and high reliability. However, since products of manufacturers of the conventional PLC are incompatible with each other, programming methods of products of manufacturers are very different, mutual interference exists between a plurality of devices of different types and an upper computer during communication, real-time synchronization performance is poor, and data cannot be interacted between the devices of different types in time.
Therefore, it is necessary to invent a multifunctional control system based on VME bus architecture to solve the above problems.
Disclosure of Invention
The invention aims to provide a multifunctional control system based on a VME bus architecture, a main control CPU board can select different unit board cards for data interaction by driving addresses by applying a VME bus, the main control CPU board is communicated with an upper computer through a TPC/IP network, thereby realizing the real-time instruction transmission and data monitoring of each unit board card by the upper computer, the communication between each unit board card and the upper computer is not interfered mutually, the real-time synchronization performance is good, the communication between different unit board cards is carried out by taking the main control CPU board as a bridge, the main control CPU board firstly drives an address line to select the unit board card needing to send data and reads the data, and then the data is sent to another unit board card which needs to receive the data, and the data among a plurality of unit board cards of different types can be interacted, so that the defects in the technology are overcome.
In order to achieve the above purpose, the invention provides the following technical scheme: the multifunctional control system based on the VME bus architecture comprises an upper computer and a controller, wherein a main control CPU board, a VME bus back board and a power supply are installed inside the controller, unit board cards are installed on the controller, the number of the unit board cards is multiple, the main control CPU board and the unit board cards are all installed on clamping grooves in the VME bus back board, the unit board cards are respectively a multi-serial port unit, an I/O unit, an AD/DA unit, an analog unit and a pulse unit, and the VME bus back board is provided with a VME bus;
the upper computer is communicated with the main control CPU board through a TPC/IP network, and is used for carrying out parameter setting, instruction sending and data monitoring on each unit board card;
the main control CPU board is responsible for task scheduling and controlling the operation of the communication of the whole system, on one hand, data interaction is carried out between the main control CPU board and an upper computer through a TCP/IP network communication protocol, and on the other hand, the main control CPU board is communicated with each unit board through a VME bus;
the multi-serial port unit mainly realizes three types of serial interface functions: two serial interfaces meeting the RS232 protocol, one serial interface meeting the RS422 protocol and five serial interfaces meeting the RS485 protocol, so that data exchange between each serial interface and the VME bus is realized;
the AD/DA unit mainly realizes the AD/DA conversion function of an analog part;
the I/O unit mainly implements two types of data interfaces: 16 paths have isolated digital input quantity, 16 paths have isolated digital output quantity, and data exchange between each digital quantity and the VME bus is realized;
the pulse unit mainly provides a data interface of 6 paths of AB phase/single pulse signals.
Preferably, the controller is designed in a standard 3U case modularization mode.
Preferably, the power supply adopts a computer integrated power supply.
Preferably, the VME bus backplane adopts a 21-slot 6U board card.
Preferably, addresses can be set through hardware among the unit board cards, and the positions of the slots are interchanged with one another.
Preferably, the main control CPU board adopts a high-performance 6U 4HP board card, on which one FPGA and one microprocessor are mounted, and the main control CPU board is provided with a back board VME interface, SRIO, PCIe, gigabit ethernet, UART, and a dual-channel QSFP interface.
Preferably, a photocoupler is connected to a 16-path digital input signal end of the I/O unit.
Preferably, an optical relay is connected to the 16-path digital output signal end of the I/O unit.
Preferably, a heat dissipation port is formed in the left side of the controller, an exhaust fan is mounted inside the heat dissipation port, an air inlet is formed in the right side of the controller, and an air inlet fan is mounted inside the air inlet.
Preferably, a first dustproof net is fixed at a left end port of the heat dissipation port, and a second dustproof net is fixed at a right end port of the air inlet.
In the technical scheme, the invention provides the following technical effects and advantages:
1. by applying the VME bus, the main control CPU board can select different unit board cards for data interaction through driving addresses, the main control CPU board is communicated with an upper computer through a TPC/IP network, thereby realizing the real-time instruction transmission and data monitoring of each unit board card by the upper computer, the communication between each unit board card and the upper computer is not interfered mutually, the real-time synchronization performance is good, the communication between different unit board cards is carried out by taking the main control CPU board as a bridge, the main control CPU board firstly drives an address line to select the unit board card needing to send data and reads the data, then the data is sent to another unit board card which needs to receive the data, the data among a plurality of unit board cards of different types can be interacted, the operation is simple, a flexible data stream processing mode is provided, and the comprehensive adaptability to complex network architectures such as large processing information amount, complex control algorithm and the like is provided;
2. the 16-path digital input signal end of the I/O unit is connected with the photoelectric coupler, the photoelectric coupler can protect a circuit from being interfered and damaged by external signals, the threshold of the input signal is improved, and therefore misoperation caused by low-voltage signals generated by inductive coupling is avoided;
3. the heat dissipation port is formed in the left side of the controller, the exhaust fan is arranged inside the heat dissipation port, the air inlet is formed in the right side of the controller, the air inlet fan is arranged inside the air inlet, the exchange between the air inside the controller and the outside air can be effectively accelerated, the heat dissipation effect of the internal elements of the controller is greatly improved, and the service life of the internal elements of the controller is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a connection diagram of the unit board card of the present invention;
FIG. 3 is a flow chart of the I/O unit signal processing of the present invention;
FIG. 4 is a schematic diagram of a main control CPU board according to the present invention;
FIG. 5 is a schematic diagram of the controller of the present invention;
fig. 6 is a perspective view of the controller of the present invention.
Description of reference numerals:
the system comprises an upper computer 1, a controller 2, a main control CPU board 3, a VME bus 4, a power supply 5, a unit board card 6, a multi-serial port unit 7, an I/O unit 8, an AD/DA unit 9, an analog unit 10, a pulse unit 11, a photoelectric coupler 12, an optical relay 13, an exhaust fan 14, an air inlet fan 15, a first dust screen 16 and a second dust screen 17.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The invention provides a multifunctional control system based on a VME bus architecture as shown in figures 1-6, which comprises an upper computer 1 and a controller 2, wherein a main control CPU board 3, a VME bus back board and a power supply 5 are installed inside the controller 2, a plurality of unit board cards 6 are installed on the controller 2, the number of the unit board cards 6 is multiple, the main control CPU board 3 and the plurality of unit board cards 6 are all installed on a clamping groove on the VME bus back board, the plurality of unit board cards 6 are respectively a multi-serial port unit 7, an I/O unit 8, an AD/DA unit 9, an analog unit 10 and a pulse unit 11, and the VME bus back board is provided with a VME bus 4;
the upper computer 1 is communicated with the main control CPU board 3 through a TPC/IP network, and the upper computer 1 is used for carrying out parameter setting, instruction sending and data monitoring on each unit board card 6;
the main control CPU board 3 is responsible for task scheduling and controlling the operation of the communication of the whole system, on one hand, data interaction is carried out between the main control CPU board and the upper computer 1 through a TCP/IP network communication protocol, and on the other hand, the main control CPU board communicates with each unit board card 6 through a VME bus 4;
the multi-serial port unit 7 mainly realizes three types of serial interface functions: two serial interfaces meeting the RS232 protocol, one serial interface meeting the RS422 protocol and five serial interfaces meeting the RS485 protocol, so that data exchange between each serial interface and the VME bus 4 is realized;
the AD/DA unit 9 mainly realizes an analog part AD/DA conversion function;
the I/O unit 8 mainly implements two types of data interfaces: 16 paths have isolated digital input quantity, and 16 paths have isolated digital output quantity, so that data exchange between each digital quantity and the VME bus 4 is realized;
the pulse unit 11 mainly provides a data interface of 6 paths of AB phase/single pulse signals.
The controller 2 is in a standard 3U case modular design;
the power supply 5 adopts a computer integrated power supply;
the VME bus back board adopts a 21-slot 6U board card;
addresses can be set among the unit board cards 6 through hardware, and slot positions can be interchanged;
the main control CPU board 3 adopts a high-performance 6U 4HP board card of the Geniteng technology, a Kintex-7 series FPGA of Xilinx company and an STM32F103 microprocessor of STMicroelectronics company are onboard, and a back board VME interface, an SRIO, a PCIe, a gigabit Ethernet, a UART and a dual-channel QSFP interface are arranged on the main control CPU board 3;
the implementation mode is specifically as follows: the unit board cards 6 can be provided with addresses through hardware and then are arranged in corresponding slots on the VME bus backboard, the main control CPU board 3 adopts a high-performance 6U 4HP board card of the Panteng technology, the board card is provided with a Kintex-7 series FPGA of Xilinx company and an STM32F103 microprocessor of STMicroelectronics company, the interfaces are rich, the daughter card module can be flexibly connected, various acquisition and processing schemes are realized, the high-efficiency computing capability is realized, the upper computer 1 and the main control CPU board 3 are communicated through a TPC/IP network, the main control CPU board 3 is communicated with each unit board card 6 through the VME bus 4, the main control CPU board 3 can select different unit board cards 6 through driving addresses to carry out data interaction, so that the upper computer 1 can carry out instruction transmission and data monitoring on each unit board card 6 in real time, the communication time phase between each unit board card 6 and the upper computer 1 is not interfered with each other, the real-time synchronization performance is good, and the communication between different unit board cards 6 is carried out by taking the main control CPU board 1 as a bridge, the main control CPU board 1 firstly drives an address line to select the unit board card 6 needing to send data and reads the data out, then the data is sent to another unit board card 6 which needs to receive the data, the data among a plurality of unit board cards 6 of different types can be interacted, the operation is simple, a flexible data stream processing mode is provided, the comprehensive adaptability to complex network architectures such as large processing information amount, complex control algorithm and the like is provided, the implementation mode specifically solves the problems that products of manufacturers of the traditional PLC are incompatible with each other, programming methods of products of the manufacturers are greatly different, mutual interference exists between a plurality of different types of equipment and an upper computer during communication, real-time synchronization performance is poor, and data cannot be interacted between the plurality of different types of equipment in time in the prior art.
The invention provides a multifunctional control system based on a VME bus architecture as shown in FIG. 3, wherein a 16-path digital input signal end of an I/O unit 8 is connected with a photoelectric coupler 12;
16 paths of digital output signal ends of the I/O unit 8 are connected with an optical relay 13;
the implementation mode is specifically as follows: through 16 way digital input signal end at IO unit 8 be connected with photoelectric coupler 12, photoelectric coupler 12 can protect the circuit from external signal's interference and damage, improve the threshold of input signal, thereby stop the maloperation that inductive coupling produced the low-voltage signal and caused, 16 way digital output signal end at IO unit 8 is connected with optical relay 13, adopt optical relay 13 to realize digital signal's output, the interference killing feature has been increased, signal output's stability has been increased, this embodiment has specifically solved the signal interference killing feature that exists among the prior art weak, the unstable problem of signal output.
The invention provides a multifunctional control system based on a VME bus architecture as shown in FIGS. 5-6, wherein a heat dissipation port is arranged on the left side of a controller 2, an exhaust fan 14 is arranged in the heat dissipation port, an air inlet is arranged on the right side of the controller 2, and an air inlet fan 15 is arranged in the air inlet;
a first dustproof net 16 is fixed at the left end port of the heat dissipation port, and a second dustproof net 17 is fixed at the right end port of the air inlet;
the implementation mode is specifically as follows: the heat dissipation port is formed in the left side of the controller 2, an exhaust fan 14 is arranged inside the heat dissipation port, the quick discharge of the heat inside the controller 2 is facilitated, an air inlet is formed in the right side of the controller 2, an air inlet fan 15 is arranged inside the air inlet, external cold air can enter the controller 2 quickly, the exchange between the air inside the controller 2 and the external air can be effectively accelerated, the heat dissipation effect of the internal elements of the controller 2 is greatly improved, the service life of the internal elements of the controller 2 is effectively prolonged, dust in the external air can be effectively prevented from entering the controller 2 through the heat dissipation port and the air inlet through the first dust screen 16 and the second dust screen 17, the cleaning inside the controller 2 is guaranteed, and the problem of poor heat dissipation effect of the controller in the prior art is specifically solved by the implementation mode.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. Multi-functional control system based on VME bus architecture, including host computer (1) and controller (2), its characterized in that: the intelligent control system comprises a controller (2), a master control CPU board (3), a VME bus backboard and a power supply (5) which are arranged in the controller (2), wherein unit board cards (6) are arranged on the controller (2), the number of the unit board cards (6) is multiple, the master control CPU board (3) and the unit board cards (6) are all arranged on a clamping groove on the VME bus backboard, the unit board cards (6) are respectively a multi-serial-port unit (7), an I/O unit (8), an AD/DA unit (9), an analog unit (10) and a pulse unit (11), and a VME bus (4) is arranged on the VME bus backboard;
the upper computer (1) is communicated with the main control CPU board (3) through a TPC/IP network, and the upper computer (1) is used for carrying out parameter setting, instruction sending and data monitoring on each unit board card (6);
the main control CPU board (3) is responsible for task scheduling and controlling the operation of the communication of the whole system, on one hand, data interaction is carried out between the main control CPU board and the upper computer (1) through a TCP/IP network communication protocol, and on the other hand, the main control CPU board is communicated with each unit board card (6) through a VME bus (4);
the multi-serial port unit (7) mainly realizes three types of serial interface functions: two serial interfaces meeting the RS232 protocol, one serial interface meeting the RS422 protocol and five serial interfaces meeting the RS485 protocol, so that data exchange between each serial interface and the VME bus (4) is realized;
the AD/DA unit (9) mainly realizes an analog part AD/DA conversion function;
the I/O unit (8) mainly implements two types of data interfaces: 16 paths of digital input quantity with isolation and 16 paths of digital output quantity with isolation realize data exchange between each digital quantity and the VME bus (4);
the pulse unit (11) mainly provides a data interface of 6 paths of AB phase/single pulse signals.
2. The VME bus architecture-based multifunction control system of claim 1, wherein: the controller (2) is in a standard 3U case modular design.
3. The VME bus architecture-based multifunction control system of claim 1, wherein: and the power supply (5) adopts a computer integrated power supply.
4. The VME bus architecture-based multifunction control system of claim 1, wherein: the VME bus back board adopts a 21-slot 6U board card.
5. The VME bus architecture-based multifunction control system of claim 1, wherein: addresses can be set among the unit board cards (6) through hardware, and slot positions can be interchanged.
6. The VME bus architecture-based multifunction control system of claim 1, wherein: the main control CPU board (3) adopts a high-performance 6U 4HP board card, an FPGA and a microprocessor are carried on the board, and a back board VME interface, an SRIO, a PCIe, a gigabit Ethernet, a UART and a dual-channel QSFP interface are arranged on the main control CPU board (3).
7. The VME bus architecture-based multifunction control system of claim 1, wherein: and the 16-path digital input signal end of the I/O unit (8) is connected with a photoelectric coupler (12).
8. The VME bus architecture-based multifunction control system of claim 1, wherein: and 16 paths of digital output signal ends of the I/O unit (8) are connected with an optical relay (13).
9. The VME bus architecture-based multifunction control system of claim 1, wherein: the left side of controller (2) has been seted up the thermovent, the internally mounted of thermovent has exhaust fan (14), the air inlet has been seted up on the right side of controller (2), the internally mounted of air inlet has air inlet fan (15).
10. The VME bus architecture-based multifunction control system of claim 9, wherein: a first dustproof net (16) is fixed to the left end port of the heat dissipation port, and a second dustproof net (17) is fixed to the right end port of the air inlet.
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| CN202110803168.6A CN113534931A (en) | 2021-07-15 | 2021-07-15 | Multifunctional control system based on VME bus architecture |
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